I did this as well but my reason is that I don't want AMZ to steal my data. Why should I let some monopolist corp know anything about my reading? It is a bumme

I did this as well but my reason is that I don't want AMZ to steal my data. Why should I let some monopolist corp know anything about my reading? It is a bummer that you can't look up Wikipedia. I wonder if this works with newer Kindles?